Pipe-wrench.



S. N. HALL.

PIPE WRENCH. APPLICATION FILED SEPT. 15, 1913.

Patented Aug. 18, 1914.

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A/ME YLTEZIM WITNESSES.-

THE NORRIS PETERS C0,. PHOTO-LHHOH WASHINGTON D. C.

UN D. STATns PATENT OFFICE I f SAMUEL. N. Haiti, on nousroiv, TEXAS.

- PIPE-VIRENCH.

To all whom it'ma concern citizen .of thefUnited States, residingat Houston, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Piped Wrenches, of which the following is a specification.

This invention relates to new-and useful improvements in pipeywre'nches, and has particular relation. towrenchesof the chain yp t The objectof the/invention is to provide a double acting wrench whereby asection of pipe may beturne'd 'either'direction, said wrenchbeingprovided with detachable jaws which may be readily removed when worn out and replaced with new ones.

Another"objectof theinvention isto provide a Fwrench ofthe character described which. is specially adapted to be used in screwing and unscrewing collars and other narrow pipe fittings.

A further feature of the invention resides in thenovel arrangement and method of attaching the aws to the handle.

' A still further feature of the invention embodies a grip chain and the method of securing the same around the section of pipe to be turned. 1

With the above and other objects in view,

the invention has particular relation to cer tain novel features*of construction, operat1on and arrangement: of parts, an example of which'is given in this specification and illustrated in thesaccomp'anying drawings, wherein i Figure 1 is a side elevation of the wrench, as applied to a pipe sect-ion. Fig. 2 is a plan view thereof, showing the wrench handle broken away. Fig. 3 is agfront end view.

, thereof. Fig. 4 is a rear view thereof, the

handle being shown in section.

Fig. 5 is a sectional view of a modified form showing one method of securing the rear grip paw to the handle, and Fig. 6 illustrates the wrench as applied to pipe fittings.

Referring'now more particularly to the draw1ngs,,where1n like numerals of ref-' erence designate similar parts in eachof the figures, the numeral 1 refers to the wrench handle which is preferably formed of steel or some other strong material. and is of a size'at its inner end .to be readily grasped and gradually enlarges toward the otherend. The enlarged or operative end ofthe handle has two hooks 2, 2 projecting rearwardly Specification of Letters Patent.

Patented Aug.1 8, 1914. Applicationfild September 15, 1913. Serial No. 789,885. I I

therefrom between which is the slot 3, the 5 Be it known thatl, SAMUEL N..I'L\ LL, a

groove l may be dove-tailed and the tongue 6 correspondingly shaped and the jaw 5 locked against lengthwise movement by means ofa key 9 which passes through alined orifices in the handle and also through the tongue 6'.- Any preferred method may be employed to secure said 'j-aw to the handle but the methods shown will usually be found preferable. The free side of thejaw 5 is arcuate and toothed so as to readily engage with the pipe to beturned thereby.

Secured upon eachside the operative end of the handle are two jaws 10, 10. These jaws are secured to the'handle bymeans of the bolt 11, which passes through said jaws and through the handle. the handle is shouldered down on each side, forming the shoulders 12, 12 against which the inner ends of the jaws l0, 10,-respectively, rest and the portions of said-jaws which project beyond, the end of said handle are thickened, thus forming the shoulders 1.3, 13, which are carried by the jaws l0 and against which the end of the U handle 1 abuts. The jaws 10 are thus locked b said shoulders a ainst turnin relative to the handle. The forward or projecting ends of thejaws 10 are toothedyso as to on gage with the pipe to be turned thereby. A grip chain let is provided, one end of which is attached to the enlarged end of the handle. This chain is of the type ordinarily employedin devices of this kind, wherein the pintels 15 project past the side plates 16, which construction adapts the chain to fit intothe slot 3 between the hooks 2 while the ends of the pintles project out laterally a sufficient distance to engage the inner sides of said hooks. Thevchain 14 is thus secured around the pipe and when the pipe section is to be turned in one direction, the jaw will be employed and when it is to be turned in the other direction the wrench may be shifted so that the jaws 10 may be brought into T engagement with the pipe without releasing the grip chain. Interme- The outer end of diate the jaws 5 and 10 is a recess 17, affording a suflicient clearance to permit this transfer of the ipe from one set of the teeth to the other without releasing the chain, and permitting the slack in the chain for its release, when the pipe is placed in said central recess 17.

This form of wrench is specially adapted to be used. in screwing pipe fittings and colla rs and the like on to pipe sections. This use is illustrated in Fig. (3. Such fittings, as 12%, are usually narrow and the jaws 10 are spaced too, far apart to engage therewith. 1n screwing and unscrewing such fittings, the jaw may be en'iployed and this jaw will. readily engage with such collars or fittings however narrow they may be. This feature constitutes one of the chief features of this form of wrench, because the ordinary pipe wrench now in common use cannot be used for such purposes. It is further to be noted that while I have shown the jaws 5 and 10 detachable either or all of them may be made integral with the handle by dropilorging and milling the jaws to the desired shape, or otherwise lorming them by any approved. method of casting or machining.

it l-lat I claim is 1. A wrench having a pair of jaws for? wardly projecting from the end of the handle, rigidly connected to the sides thereof and having their operating faces toothed, a jaw wrresponding substantially in width and alined with the space between said jaws secured to the handle at the rear thereof, a link cmln'acing the rearmost jaw, a chain connected thereto, and means at the end of the handle to engage the chain when 00- operating with either of the jaw members, as

it forth.

2. A. wrench having a pair of jaws forwardly projecting from the end of the Copies of this patent may be obtained for handle, rigidly connected to the sides thereof and having their operating faces toothed, a jaw corresponding substantially in width and alincd with the space between said jaws zlllQlSGCUlGCl to the handle at the rear of the jaws, a chain attached to said handle adjacent said jaw, and means at the end of the handle to engage the chain when cooperating with either of the jaw members, as set forth.

:3. A pipe wrench comprising a handle having a solid gripping member adjacent its cnierat'ing end, a pair of spaced jaws having their operating faces toothed forming a gripping surface of greater width than that of said gripping member and adapted to be secured to the operating end of said handle,

a link embracing said gripping member, a chain connected thereto, -and means at the end of the handle for engaging the chain when cooperating with either of the jaw members, as set forth.

l. A pipe wrench comprising a handle lniving a solid removable gripping member adjacent its operating end, apair of spaced jaws forming a gripping surface of greater width than that of-saicl gripping member and adapted to be secured to the operating end of said handle, a link spanning said gripping member, a chain secured to said link, and means at the end of the handle for securing the chain between said spaced jaws when cooperating with either of said members, as set forth, i

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL N. HALL.

Witnesses: v

lVlAY MoN reoa -nm H. E. Smear, lifLD.

five cents each, by addressing the .Gommissioner .of .Patents. Washington, D. C. 

